title: Reply: To PMID 23553415.
authors.affiliation: University of North Carolina, Chapel Hill, NC.
authors.forename: Meghan E
authors.initials: ME
authors.lastname: Free
authors.forename: Maureen A
authors.initials: MA
authors.lastname: Su
mesh_terms: D056648:Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis / Q000276:immunology*; D005260:Female; D006801:Humans; D008297:Male; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*